Used primarily in the treatment of multiple myeloma, a type of blood cancer, by inhibiting tumor growth and modulating the immune system. It also shows efficacy in managing symptoms of leprosy, particularly erythema nodosum leprosum, by reducing inflammation. The compound functions through anti-angiogenic and immunomodulatory mechanisms, making it valuable in oncology and inflammatory conditions. Its metabolite activity contributes to both therapeutic effects and toxicity risks, requiring careful clinical monitoring.